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Finding the Fourth Proportional to 716,041.04, 988,143.78 and 393,753.44

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Solution

The fourth proportional to 716,041.04, 988,143.78 and 393,753.44 is: 543,383.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,041.04 : 988,143.78 = 393,753.44 : x
  2. Step 2: Convert to fraction form
    716,041.04/988,143.78 = 393,753.44/x
  3. Step 3: Cross multiply
    716,041.04x = 988,143.78 × 393,753.44
  4. Step 4: Simplify right side
    716,041.04x = 389,085,012,589.60
  5. Step 5: Solve for x
    x = 389,085,012,589.60/716,041.04
  6. Step 6: Final answer
    x = 543,383.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.